Answer:
2+3=5
4+5=9
2+1=3
2+5=7
an even number plus an odd number will be a an odd number because your always going to have an unequal amount when using an odd number and a even number
x=16.5
Step-by-step explanation:
12.7 + 3.8 = x - 3.8 + 3.8
16.5 = x
The number is 10.
